兴城-丰乐地区深层火山岩储层识别

前期钻探揭示，松辽盆地北部深层火山岩分布范围广、厚度大，是天然气的良好储层，具有广阔的勘探前景。但是如何寻找火山岩储层一直是松辽盆地北部深层天然气勘探的难题。将钻井资料与地震资料结合开展火山岩储层识别工作，取得了一定效果，对火山岩气藏勘探提供了重要的技术支持。从观察火山岩岩心特征着手，建立地质-地震解释模型，以地震资料为基础，应用地震响应特征分析、构造趋势面分析、地震属性分析、三维体切片技术和地震反演技术等识别火山岩储层，在松辽盆地北部兴城-丰乐地区深层天然气勘探过程中取得了实效，实现了火山岩储层地震预测技术的突破，所建立的深层火山岩储层地震识别模型经钻探证实效果很好，已在松辽盆地深层火山岩气藏勘探中推广应用。

IDENTIFICATION FOR DEEP VOLCANIC RESERVOIR IN XINGCHENG-FENGLE AREAS, SONGLIAO BASIN

The prophase drilling results have revealed that deep volcanic formations with great thickness are widely distributed in the northern Songliao Basin, suggesting there are significantly favorable gas reservoirs with good exploration prospects. However, how to find volcanic reservoirs is an important issue in deep gas exploration in the northern Songliao Basin. Therefore this study combined drilling data and seismic data to identify volcanic reservoirs acquiring some good results and providing important technical supports for gas volcanic reservoir exploration. Starting from the core analysis of volcanic reservoirs, the study built up a geologic seismic model of volcanic reservoir while applying seismic response properties analysis, structural tread panel analysis, seismic attribute analysis, 3D volume slice analysis, seismic inversion techniques and so on to identify volcanic reservoir. This model has been used in deep gas exploration with good effects in the northern Songliao Basin, and demonstrating that breakthrough has made in seismic prediction technique of volcanic reservoir. The subsequent drilling results verified the seismic recognition model for deep volcanic reservoir has good practical application effects. This paper suggests this model should be encouraged in deep volcanic gas reservoir exploration in the Songliao Basin.